公开(公告)号：US20160111105A1

公开(公告)日：2016-04-21

申请号：US14981923

申请日：2015-12-29

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Chen HU ,  Lei MIAO ,  Zexin LIU

IPC: G10L19/038 ,  G10L19/06

CPC classification number: G10L19/038 ,  G10L19/06 ,  G10L2019/0005

Abstract: Embodiments of the present application proposes a frequency envelope vector quantization method and apparatus, where the method includes: dividing N frequency envelopes in one frame into N1 vectors; quantizing a first vector in the N1 vectors by using a first codebook, to obtain a code word corresponding to the quantized first vector, where the first codebook is divided into 2B1 portions; determining, according to the code word corresponding to the quantized first vector; determining a second codebook according to the codebook of the ith portion; and quantizing a second vector in the N1 vectors based on the second codebook. In the embodiments of the present application, vector quantization can be performed on frequency envelope vectors by using a codebook with a smaller quantity of bits. Therefore, complexity of vector quantization can be reduced, and an effect of vector quantization can also be ensured.

Abstract translation: 本申请的实施例提出了一种频率包络矢量量化方法和装置，其中该方法包括：将一帧中的N个频率包络分成N1个矢量; 通过使用第一码本量化N1矢量中的第一矢量，以获得与量化的第一矢量相对应的码字，其中第一码本分为2B1个部分; 根据与量化的第一矢量对应的代码字来确定; 根据第i部分的码本确定第二码本; 并且基于第二码本对N1个矢量中的第二矢量进行量化。 在本申请的实施例中，可以通过使用具有较小位数的码本来对频率包络向量执行矢量量化。 因此，可以减少矢量量化的复杂度，并且也可以确保矢量量化的效果。

公开(公告)号：US20240356610A1

公开(公告)日：2024-10-24

申请号：US18757609

申请日：2024-06-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xianda LIU ,  Chen HU ,  Shijie CAI ,  Zhening ZHANG ,  Kunpeng LIU

IPC: H04B7/06 ,  H04L5/00 ,  H04L25/02 ,  H04W8/22

CPC classification number: H04B7/0626 ,  H04L5/0051 ,  H04L25/0204 ,  H04W8/22

Abstract: A communication method and apparatus are provided. The method includes: A terminal device receives a first downlink reference signal from a first network device, and the terminal device receives a second downlink reference signal from a second network device. The terminal device determines channel state information. The channel state information is determined based on a ratio of a first channel estimation value to a second channel estimation value. The first channel estimation value is determined based on the first downlink reference signal, and the second channel estimation value is determined based on the second downlink reference signal. The terminal device sends the channel state information.

公开(公告)号：US20190057706A1

公开(公告)日：2019-02-21

申请号：US16167281

申请日：2018-10-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zexin LIU ,  Lei MIAO ,  Chen HU

IPC: G10L19/02 ,  G10L19/002 ,  G10L19/032

CPC classification number: G10L19/0204 ,  G10L19/002 ,  G10L19/032

Abstract: Embodiments of the present disclosure provide signal encoding and decoding methods and devices. The method includes: determining, a quantity k of subbands to be encoded, where i is a positive number, and k is a positive integer; selecting, according to quantized envelopes of all subbands, k subbands from all the subbands, or selecting k subbands from all subbands according to a psychoacoustic model; and performing a first-time encoding operation on spectral coefficients of the k subbands. In some embodiments of the present disclosure, the quantity k of subbands to be encoded is determined according to the quantity of available bits and the first saturation threshold, and encoding is performed on the k subbands that are selected from all the subbands, instead of on an entire frequency band.

公开(公告)号：US20160111104A1

公开(公告)日：2016-04-21

申请号：US14984703

申请日：2015-12-30

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Zexin LIU ,  Lei MIAO ,  Chen HU

IPC: G10L19/02 ,  G10L19/032 ,  G10L19/002

CPC classification number: G10L19/0204 ,  G10L19/002 ,  G10L19/032

Abstract: Embodiments of the present disclosure provide signal encoding and decoding methods and devices. The method includes: determining, a quantity k of subbands to be encoded, where i is a positive number, and k is a positive integer; selecting, according to quantized envelopes of all subbands, k subbands from all the subbands, or selecting k subbands from all subbands according to a psychoacoustic model; and performing a first-time encoding operation on spectral coefficients of the k subbands. In the embodiments of the present disclosure, the quantity k of subbands to be encoded is determined according to the quantity of available bits and the first saturation threshold, and encoding is performed on the k subbands that are selected from all the subbands, instead of on an entire frequency band, which can reduce spectrum holes of a signal obtained through decoding, and therefore, can improve auditory quality of an output signal.

Abstract translation: 本公开的实施例提供信号编码和解码方法和装置。 该方法包括：确定要编码的子带的数量k，其中i是正数，k是正整数; 根据所有子带的量化包络选择来自所有子带的k个子带，或者根据心理声学模型从所有子带中选择k个子带; 以及对k个子带的频谱系数执行第一次编码操作。 在本公开的实施例中，根据可用比特量和第一饱和阈值来确定要编码的子带的数量k，并且对从所有子带中选择的k个子带进行编码，而不是在 整个频带，其可以减少通过解码获得的信号的频谱孔，并且因此可以提高输出信号的听觉质量。